Course Introduction and Objectives

The main objective of this course is to give students a brief introduction of some important experimental techniques related to experimental research in physics which are currently being used in different modern research labs e.g, vacuum technology to make contamination free samples at nanoscale and different type of sensors to measure different physical parameters e.g, pressure, temperature, magnetic field etc. Vacuum technology includes concepts of fundamental vacuum physics, importance, applications, ranges creation and measurement of vacuum, hurdles regarding creation of vacuum and mathematical modeling of fluid dynamics and pumping process. This course also provides a comprehensive introduction to construction and working of different vacuum related devices and different types of sensors.

Contents

1. Introduction to vacuum physics: Importance, Ranges and applications of vacuum
2. Molecular description of gases: Kinetic molecular theory of gases, Continuum and molecular states of gases, Mean free path, Molecular number density, Impingement rate
3. Surfaces processes: Scattering of a molecule from a surface, Adsorption and desorption processes and their mathematical modeling
4. Outgassing: Origins, importance and mathematical modeling of outgassing rate due to different sources e.g, desorption, diffusion & permeation
5. Sputtering: Mechanism, Factors affecting sputtering yield, applications of sputtreing,
6. Gas flow: Continuum and molecular flow of gases
7. Conductance and pumping speed, Mathematical modeling for conductance of long, short pipe and an aperture both for continuum and molecular flow regimes
8. Pumping process, Pump down time and Ultimate pressure
9. Vacuum pumps: Rotary & Root pumps, Turbo molecular pump, Ionic and Titanium sublimation pumps
10. Vacuum gauges: Diaphragm & Capacitance diaphragm guages, Spin rotor, Penning & Magnetron guages
11. Sensor technology: Temprature sensors, Optical sensors, Magnetic sensors, Fluid flow Sensors, Metal detectors

Recommended Texts

1. Chambers, A. (2004). Modern vacuum physics (1st ed.). London: CRC Press.
2. Fraden, J. (2010). A handbook of modern sensors:Physics, design and applications (4th ed.). New York: Springer.

Suggested Readings

1. Hoffman, D. M., Thomas, J. H., Singh, B. (1997). Handbook of vacuum science and technolog. London: Elsevier.
2. Yoshimura, N. (2007). Vacuum technology:Practice for scientific instruments. New York: Springer.
3. Martin, L., Weissler, G.L., Carlson, R. W. (1979). Methods of Experimental Physics. Vol 14: Vacuum physics and technology. New York: Spring

Key Dates and Time of Class Meeting

BS Physics 04 Years Session 2017-21 Self Support (Semester VII)

1. Monday           (01: 30 pm - 02: 30 pm)

2. Tuesday          (01: 30 pm - 02: 30 pm)

3. Wednesday     (01: 30 pm - 02: 30 pm)

BS Physics 04 Years Session 2017-21 Reglar+Ex PPP Combined (Semester VII)

1. Monday           (11: 30 am - 12: 30 pm)

2. Tuesday          (11: 30 am - 12: 30 pm)

3. Wednesday     (11: 30 am - 12: 30 pm)

MSc Physics 02 Years Session 2019-21 Reglar+Self Support Combined (Semester III)

1. Thursday           (11: 30 am - 01: 00 pm)

2.  Friday               (11: 30 am - 01: 00 pm)

Commencement of Classes                                                   October 12, 2020

Mid Term Examination                                                            December 14-18, 2020

Final Term Examination                                                          Feburary 08-12, 2021

Declaration of Result                                                               Feburary 19, 2021